revert to index based notify loop #212
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This fixes an issue in which calls to link occurring during notification would invalidate the iterators of the structured for loop. Calling link as a result of a reader<T>::watch callback can occur quite naturally. By using the size of the children vector at the point at which the for loop is initiated, and by using the [] operator in order to access the children within the vector, the issue is avoided.
arximboldi
approved these changes
Sep 18, 2024
Agreed. I'm trying my hand at a test for this. There's something tricky about the fact that the incorrect version of the loop falls into UB. |
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Merging already, you can make a new PR for the test later if you feel like it... |
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This fixes an issue in which calls to link occurring during notification would invalidate the iterators of the structured for loop. Calling link as a result of a reader::watch callback can occur quite naturally.
By using the size of the children vector at the point at which the for loop is initiated, and by using the [] operator in order to access the children within the vector, the issue is avoided.